External Torx, Internal Torx, External Hex, TX, Hex
Metric, Torx, AF, Imperial, SAE
7/32 ", 15/16 ", 5/16 ", 5/8 ", 11/16 "
9.53, 25.4, 19.05, 6.35, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide